1 /* 2 * Copyright (c) 2018, 2019, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. 8 * 9 * This code is distributed in the hope that it will be useful, but WITHOUT 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 12 * version 2 for more details (a copy is included in the LICENSE file that 13 * accompanied this code). 14 * 15 * You should have received a copy of the GNU General Public License version 16 * 2 along with this work; if not, write to the Free Software Foundation, 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 18 * 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * questions. 22 * 23 */ 24 25 #ifndef SHARE_MEMORY_METASPACE_METASPACEREPORT_HPP 26 #define SHARE_MEMORY_METASPACE_METASPACEREPORT_HPP 27 28 #include "memory/allocation.hpp" 29 30 namespace metaspace { 31 32 class MetaspaceReporter : public AllStatic { 33 public: 34 35 // Flags for print_report(). 36 enum ReportFlag { 37 // Show usage by class loader. 38 rf_show_loaders = (1 << 0), 39 // Breaks report down by chunk type (small, medium, ...). 40 rf_break_down_by_chunktype = (1 << 1), 41 // Breaks report down by space type (anonymous, reflection, ...). 42 rf_break_down_by_spacetype = (1 << 2), 43 // Print details about the underlying virtual spaces. 44 rf_show_vslist = (1 << 3), 45 // Print metaspace map. 46 rf_show_vsmap = (1 << 4), 47 // If show_loaders: show loaded classes for each loader. 48 rf_show_classes = (1 << 5) 49 }; 50 51 // This will print out a basic metaspace usage report but 52 // unlike print_report() is guaranteed not to lock or to walk the CLDG. 53 static void print_basic_report(outputStream* st, size_t scale); 54 55 // Prints a report about the current metaspace state. 56 // Optional parts can be enabled via flags. 57 // Function will walk the CLDG and will lock the expand lock; if that is not 58 // convenient, use print_basic_report() instead. 59 static void print_report(outputStream* out, size_t scale = 0, int flags = 0); 60 61 }; 62 63 } // namespace metaspace 64 65 #endif // SHARE_MEMORY_METASPACE_METASPACEREPORT_HPP